Racemic spiroazepineindole (1) was identified from a phenotypic screen on wild type Plasmodium falciparum with an in vitro IC(50) of 90 nM. Structure-activity relationships for the optimization of 1 to compound 20a (IC(50) = 0.2 nM) including the identification of the active 1R,3S enantiomer and elimination of metabolic liabilities is presented. Improvement of the pharmacokinetic profile of the series translated
描述了一系列螺四氢 β-咔啉的抗疟原虫活性。外消旋螺氮杂
吲哚 (1) 是从野生型恶性疟原虫的表型筛选中鉴定出来的,体外 IC(50) 为 90 nM。介绍了优化 1 到化合物 20a (IC(50) = 0.2 nM) 的构效关系,包括识别活性 1R、3S 对映异构体和消除代谢负担。该系列药代动力学特征的改进在伯氏疟原虫感染的疟疾小鼠模型中转化为卓越的口服功效,在该模型中,五只小鼠中有四只每天服用 30 毫克/千克的剂量,完全治愈。